Global Patent Index - EP 1668775 A1

EP 1668775 A1 20060614 - HIGH PERFORMANCE LOW NOISE AMPLIFIER

Title (en)

HIGH PERFORMANCE LOW NOISE AMPLIFIER

Title (de)

SEHR LEISTUNGSFÄHIGER RAUSCHARMER VERSTÄRKER

Title (fr)

AMPLIFICATEUR PERFORMANT A FAIBLE BRUIT

Publication

EP 1668775 A1 20060614 (EN)

Application

EP 04769429 A 20040915

Priority

  • IB 2004003061 W 20040915
  • EP 03300129 A 20030923
  • EP 04769429 A 20040915

Abstract (en)

[origin: WO2005029696A1] A signal processing circuit is proposed, which is intended to receive a pair of input signals Sp and Sn in phase opposition on two input terminals and to provide two pairs of output currents SIp and SIn in phase opposition on four output terminals. Each input signal Sp and Sn is amplified in an amplification unit LNAUp and LNAUn and subsequently split in a splitting unit SPLUp and SPLUn. The invention is such that each of the two splitting units SPLUp and SPLUn includes at least two branches, respectively BIp, BQp and BIn, BQn connected between said amplification unit, respectively LNAUp and LNAUn, and one of said output terminals, the four branches BIp, BQp and BIn and BQn each including at least an impedance, respectively RIp, RQp, RIn, RQn, having identical characteristics. Mixer circuits can be easily stacked with this signal processing circuit.

IPC 1-7

H03F 3/45; H03D 7/16

IPC 8 full level

H03F 3/45 (2006.01); H03D 7/14 (2006.01)

CPC (source: EP KR US)

H03D 7/1408 (2013.01 - EP US); H03D 7/1433 (2013.01 - EP US); H03D 7/1441 (2013.01 - EP US); H03D 7/1458 (2013.01 - EP US); H03D 7/1491 (2013.01 - EP US); H03D 7/16 (2013.01 - KR); H03F 3/45 (2013.01 - EP KR US); H03D 2200/0043 (2013.01 - EP US); H03D 2200/009 (2013.01 - EP US); H03F 2200/372 (2013.01 - EP US)

Citation (search report)

See references of WO 2005029696A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2005029696 A1 20050331; CN 1856933 A 20061101; CN 1856933 B 20110413; EP 1668775 A1 20060614; EP 1668775 B1 20130619; JP 2007506326 A 20070315; KR 20060121886 A 20061129; US 2008125072 A1 20080529; US 7565128 B2 20090721

DOCDB simple family (application)

IB 2004003061 W 20040915; CN 200480027387 A 20040915; EP 04769429 A 20040915; JP 2006526731 A 20040915; KR 20067005673 A 20060322; US 57288504 A 20040915